新奥工法（英语：The New Austrian Tunneling method, NATM），全称新奥地利隧道工法，是在1957年至1965年之间于奥地利所研发的一种挖掘隧道的工程法。它和旧的方法有所不同，为萨尔茨堡在1962年时所命名的。新奥工法的最大研发工程者为Ladislaus von Rabcewicz、Leopold Müller和Franz Pacher。此工法主要的不同处是以旁边的岩石本身的压力荷重量来让附近挖空的隧道相抵消，可以让被挖空的隧道更稳定、安全。

The New Austrian Tunnelling method (NATM), also known as Sequential Excavation Method (SEM), describes a popular method of modern tunnel design and construction. This technique first gained attention in the 1960s based on the work of Ladislaus von Rabcewicz, Leopold Müller and Franz Pacher between 1957 and 1965 in Austria. The name NATM was intended to distinguish it from the old Austrian tunnelling approach. The fundamental difference between this new method of tunneling, as opposed to earlier methods, comes from the economic advantages made available by taking advantage of the inherent geological strength available in the surrounding rock mass to stabilize the tunnel .